<div class="home">
    <div class="index" ng-if="isIndex">
        <button ng-click="toHome()"></button>
    </div>

    <div class="index2" ng-show="!isIndex">
        <div id="main"></div>

        <div class="tip">
            <i></i>
        </div>
    </div>
    <show-alert></show-alert>
</div>